States of Matter
This state of matter has a definite shape and volume
solid
This is the simplest form of matter that cannot be broken down.
An element
This type of mixture looks the same throughout
Homogeneous mixture
If an object floats in water, its density is ______ than water.
less
This state of matter takes the shape of its container.
liquid
A pure substance made of two or more elements chemically combined.
A compound
This type of mixture has visible parts that can be easily separated.
Heterogeneous mixture
If an object sinks in water, its density is _____ than 1 g /mL
greater
What state of matter has the greatest amount of energy in its particles?
gas
Water (H20) is a pure substance. Explain why.
It is made of the same type of molecule throughout.
I lemonade an example of a homogeneous or heterogeneous mixture
Homogenous
An object has a mass of 30 g and volume of 15. What is the density?
2 g
Compare the particle arrangement in solids, liquids, and gases.
Solids have tightly packed particles, liquids have loosely packed particles that flow, gases have particles spread far apart and move freely.
How are compounds different from mixtures?
Compounds are chemically combined, have new properties, and cannot be separated. Mixtures are physically combined and can be separated.
Explain how you could separate a homogeneous mixture such as salt water.
By heating the mixture and using evaporation to separate the parts
Rubbing alcohol has a density of 0.79 g/mL, soda has a density of 1.042 g, syrup has a density of 1.33 g, hand sanitizer has a density of 0.8 g. List the arrangement of the substances by their densities.
Rubbing alcohol, hand sanitizer, soda, syrup
Explain how particle motion changes when a solid turns into a liquid and then into a gas.
Particles gain energy, vibrate faster, move more freely as they change to a liquid, and move rapidly and spread out as they change to gas.
Explain how the properties of elements change when they form a compound. (example: sodium and chlorine forming salt)
Elements lose their original properties and create a new substance with different properties
Explain why salt water is considered a homogeneous mixture, and why trail mix is considered a heterogeneous mixture.
Salt dissolves evenly, making the mixture look uniform; trail mix has visible, uneven parts
A wooden block has a density of 0.8 g /cm3. If it is cute in half, what happens to the density of each piece, and why?
The density stays the same because D = m/v. You decreased both the mass and volume.